1232542540 has 48 divisors (see below), whose sum is σ = 2787966720. Its totient is φ = 456200640.

The previous prime is 1232542529. The next prime is 1232542567. The reversal of 1232542540 is 452452321.

It is a super-2 number, since 2×1232542540² = 3038322225819303200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1232542499 and 1232542508.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21376 + ... + 54055.

It is an arithmetic number, because the mean of its divisors is an integer number (58082640).

Almost surely, 2^1232542540 is an apocalyptic number.

1232542540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1232542540 is an abundant number, since it is smaller than the sum of its proper divisors (1555424180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1232542540 is a wasteful number, since it uses less digits than its factorization.

1232542540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75502 (or 75500 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 1232542540 is about 35107.5852202911. The cubic root of 1232542540 is about 1072.1790223685.

Adding to 1232542540 its reverse (452452321), we get a palindrome (1684994861).

The spelling of 1232542540 in words is "one billion, two hundred thirty-two million, five hundred forty-two thousand, five hundred forty".